The station signed on the air on November 11, 1958; 66 years ago (1958-11-11).[3] The call sign was WMUZ. The station originally was powered at 110,000 watts, before the Federal Communications Commission (FCC) set 50,000 watts as the maximum for stations in the Detroit area. WMUZ-FM reduced its power to the standard 50,000 watts when it relocated to a tallertower. In effect, it kept the same Class B coverage area, despite the reduction in power.
WMUZ-FM has always been owned by Crawford Broadcasting. Its original general manager was Dr. Al Black while Crawford Broadcasting founder Percy Crawford was the president. After Percy's death, his son Donald took over his role. In addition to carrying brokered Christian radio programs, WMUZ once aired ethnic shows on the weekend, including broadcasts in Polish, Romanian, Arabic and German.[4]
On August 24, 2017, Crawford Broadcasting acquired a Detroit AM station at 1200 kHz. It put the WMUZ call sign on that station, requiring 103.5 to add the "-FM" suffix to its call letters. As many of the Christian talk and teaching programs moved over to the AM station, WMUZ-FM increased its hours playing Christian Contemporary music.
